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adprom

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About adprom

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  1. They have plenty of bandwidth on Kayo - I have seen streams up to 12Mbps - but yes, AAC does compress nicely. The device decodes it and spits PCM out to the receiver. AAC has been around for a long time. Not the nicest codec but not really much of an issue for sport.
  2. It is 32Khz 16bit - not hugely rare, but not exactly common either. Kayo actually use this as their audio format... I have no idea why. Might email them.
  3. Has any one else experienced on the 8805 , or other Marantz or Denon products that when you have a 32kHz stereo signal, that you cannot upmix to Dolby surround or DTS mode? On the Denon, this is less of an issue as Matrix mode can be selected. However on the 8805, no such mode exists. Now typically this is not an issue as very little content comes across in 32Khz - however the newish Kayo streaming platform does and it would be nice to be able to upmix to some sort of surround with commentary out of the centre channel. Any thoughts? Using Kodi to stream Kayo - not sure if Apple TV or Chromecast presents the same limitation. Sorry, but that is not true. HDMI is a packetised protocol so as long as you are getting an error free signal, there is no capacity for there to be a difference between cables. You can feel free to do what you want, but it should be called out for anyone else who might waste money on this. HDMI as an interface is not dissimilar to ethernet in many respects... provided the cable is providing error free transmission there is no loss. Audioholics did a good segment on it:. FYI I have been required to use applications where HDMI signals must be converted to fibre and back for long distances (longest I have seen is 80km so far). It can be switched almost like a network packet with the right equipment.
  4. Even if true, if the M51 is in the chain, then the limiting factor will be the M51 anyway. So putting a preamp in the path will simply have an additive effect - so can't improve upon the M51 analogue output. So given they are connected in series, the M51 is likely to be superior if just connected by itself as it takes one component out of the chain. Also remembering that even on a 24 bit source, up to 66dB of attenuation can be applied with absolutely no loss of quality.
  5. I wouldn't class it as terrible. I had an arcam CD73T cd player which was superseded by the dac and flac.The dacmagic just wasn't quite as good as the cd73t. The M51 is spectacular though for the price range.
  6. I have a 2 channel system but slightly different configuration. I have a DVDO Edge video processor. On it, it has 2 HDMI outputs. One of these is audio only ouptut.... You can see how this is the perfect match for this situation. Works perfectly without any HDMI output connected from the M51 even.
  7. Bought one of these the other day to replace my dac magic. Have an Arcam A28 integrated amp and PMC TB2S+ speakers, so no doubt a little overkill but for the price it was an unbeatable choice. Was expecting a bit of a difference as I know the speakers are quite capable, but the improvement in imaging and instrument separation revealed just what an excellent buy this is at that price point. Especially given the dacmagic while not fantastic, isn't bad. Biggest difference is on more complex tracks with multiple instruments with the separation and on vocals. A lot smoother and I suspect more accurate as well. Can see this dac lasting for quite a while and several system iterations.
  8. Been in there once, will never ever go in there again. Not only that, but they talk out of their arses. I would get something shipped interstate rather than support those complete and utter idiots. As you said though, if they don't sell it then they simply put it down. CAV here as well.
  9. The SB Touch is fine as it is. By the pure way it is designed, the power supply mod is questionable at best. Software mods - well that is just absolutely ridiculous claims of it affecting the sound quality. I've set up a couple of SB touches into DACs and it is an excellent solution. With most reclocking dacs these days - the jitter is well within the reclocking threshold (thus given it is being reclocked anyway, jitter isn't an issue). In fact I have one set up going into a dacmagic, and another family member has one setup going into a Bryston BDA-1 with excellent results.
  10. Everyone needs to be mindful with IP based equipment is that it is relying on the underlying network. Some cheap switches and routers, particularly if incorrectly configured can play havoc and interfere with layer 3 traffic which would include the squeezebox protocol. When something like that happens, power cycle all the switches, routers, access points on the network which will cause all the network interfaces to reset. Especially with cheap unmanaged switches, an errant device such as a misbehaving mobile phone on wifi can cause unknown issues elsewhere.
  11. Summary: WAV - Bitstream audio stored with no compression. Should show 1411kbps FLAC - Bitstream audio stored with lossless compression (think of how zip compression works). All data retained. Will show a bitrate dependent upon how well the file can be compressed without losing data. i.e. If the file can be compressed to half its normal size if it was a wav, then it will likely show 706kbps. MP3 - Compressed audio with lossy compression - i.e. upon decompression the stream approximates the original but isn't a perfect replica Exact audio copy is pretty good, but personally I use dbpoweramp which I have found is better. Either way, if you use any program with accuraterip then you are doing well. It isn't voodoo at all, just same basic compression algorithms. Make sense?
  12. This isn't quite true. If congestion is occurring in the backhaul or in the core network of the ISP then the ISP can very much influence things. Especially depending on how much itnernational bandwidth the carrier has bought and how much traffic is going over their international links (if streaming overseas). This can help depending on where the issue lies. Just in advance, my opinions are my own and don't reflect my employer's etc etc. Now that is done... Optus should have an ok network, although it does seem to be hit and miss at times. Telstra, internode, iinet and westnet (westnet is owned by iiNet anyway now) have very respectable networks. Node and ii are worth checking out because they provide local radio streams from overseas. i.e. iiNet stream international radio from their own servers which can improve things an awful lot as you aren't relying on the latency and throughput of a heap of international links yourself. That said, find out which ISPs have their own equipment at the exchange - this can be beneficial if you choose to go with a provider other than Telstra who do. Note that if you are on RIM (small type of ADSL exchange) then no matter who you go with, the 'last mile' is provided by telstra including backhaul. These types of exchanges are renowned for being congested and having bandwidth issues. In this situation, it is unlikely any change in ISP will help. Beyond that, then any of Node, T, ii and westnet is worth looking into. iiNet and T most likely have the strongest international links. iiNet and node will have the most "Freezone" content and radio streamed from local servers. As far as international links go - with any of those 4 it shouldn't be an issue. Hopefully that explains somewhat. As for optus, I have the least knowledge on them however from what I do know, I would personally never go with them. As said distance from the exchange will affect things. However, if you can get ADSL and don't have anything else running - your sync speed to the exchange won't be a bottleneck for internet radio. Given the Telstra qualification to get an ADSL service pretty much means you will 1500kbps or higher and internet radio streams never go near that... Ultimately though, the biggest issue with the internet is that there is no Quality of Service (QoS) on it. That means that if any one link between you and a server has a lot of traffic, your performance will drop just like everyone else's regardless of what you need it for or the application you need it for. So there is never any guarantee of a perfect stream. Some providers do tend to be better than others though.
  13. They appeared for $270 on LTS about 3 weeks ago and they had another special 2 weeks ago where they briefly appeared for $265 when I picked up mine.
  14. Then you 1. don't have the software setup properly and 2. have flac and wav files that are not equivalent... In a bit perfect setup, the DAC is getting EXACTLY the same signal regardless. Provided it is set up properly the software or file format (provided it is a lossless format) is irrelevant. If it is bit perfect, it is bit perfect. As log as the jitter is the same or within the reclocking parameters of the DAC there is no difference. Unless if something is somehow affecting the jitter, it simply won't sound any different. There is no technical basis behind this at all... If you are hearing differences - then it is almost certainly due to an incorrect setup or faulty equipment. Bits aren't bits but you need to have an understanding of where the complexity is to know what can and can't make a difference. Something as simple as flac vs wav will have no difference and I recommend anyone who disagrees to have a plausible theory as to why... It isn't like playing a bitstream from a cd where you can get errors. Flac and WAV files are read back exactly the same and processed from the hard drive or storage device to give exactly the same stream of data every time. To suggest they sound different is to suggest that your standard word processing file is slightly different every time you open it.FLAC and WAV are PCM - just different ways of storing it. Download audacity and compare...
  15. For those using PCs to play back onto a DAC please note that you need the proper software to git an unaltered bitstream to the DAC. This means either using the appropriate ASIO drivers, or in the case with Windows Vista/7 you can use the windows WASAPI to ensure a bit perfect playback. Foobar has an addon to support this and it works extremely well. If you are using flac files to a dac, then there are only 2 possibilities that will have them sound different to WAV files. Firstly is that you aren't sending the ac a true bitstream of the exact audio file - i.e. windows or the OS is altering or remixing the stream on the fly. By default windows does this. Alternatively, the processor is overloaded decoding causing extremely high jitter beyond the specs of a reclocking dac or a degraded audio stream. This won't happen on a PC generally, but can happen on streaming media players on higher flac compression (6 or above) which don't have the processing power to decode the stream. If you are hearing a difference, then it is almost certainly the software being setup incorrectly and not giving a bitperfect stream rather than anything else. Simplest way of doing this is downloading foobar and installing the WASAPI addin (also need to go into preferences and choose to use WASAPI under the "output format").
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